Purple is the color of royalty, often signifying the status of a noble being or the presence of a king and Queen(s). Or maybe, if you’re truly lucky, a Birthday Shake. The Mets, a team often on the brink of some sort of internal collapse, was visited by such a noble foreign dignitary last week at Citi Field: Grimace, who threw out the first pitch on June 12 in celebration of another year of life.